rhsa-2023_7379
Vulnerability from csaf_redhat
Published
2023-11-21 10:27
Modified
2024-11-06 04:21
Summary
Red Hat Security Advisory: kernel-rt security update
Notes
Topic
An update for kernel-rt is now available for Red Hat Enterprise Linux 9.2 Extended Update Support.
Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.
Details
The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements.
Security Fix(es):
* kernel: net/sched: cls_u32 component reference counter leak if tcf_change_indev() fails (CVE-2023-3609)
* kernel: tun: bugs for oversize packet when napi frags enabled in tun_napi_alloc_frags (CVE-2023-3812)
* kernel: net/sched: Use-after-free vulnerabilities in the net/sched classifiers: cls_fw, cls_u32 and cls_route (CVE-2023-4128, CVE-2023-4206, CVE-2023-4207, CVE-2023-4208)
* kernel: use after free in nvmet_tcp_free_crypto in NVMe (CVE-2023-5178)
* kernel: netfilter: potential slab-out-of-bound access due to integer underflow (CVE-2023-42753)
* kernel: AMD: Cross-Thread Return Address Predictions (CVE-2022-27672)
* hw: Intel: Gather Data Sampling (GDS) side channel vulnerability (CVE-2022-40982)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
Terms of Use
This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.
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"ids": [
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{
"category": "description",
"text": "A flaw was found in HW. When SMT is enabled, certain AMD processors may speculatively execute instructions using a target from the sibling thread after an SMT mode switch, potentially resulting in information disclosure.",
"title": "Vulnerability description"
},
{
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"text": "kernel: AMD: Cross-Thread Return Address Predictions",
"title": "Vulnerability summary"
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{
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"text": "The Red Hat Enterprise Linux 8 and 9 are not affected if spectre_v2 mitigation enabled (and it is enabled by default).",
"title": "Statement"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
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{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2022-27672"
},
{
"category": "external",
"summary": "RHBZ#2174765",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2174765"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2022-27672",
"url": "https://www.cve.org/CVERecord?id=CVE-2022-27672"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2022-27672",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-27672"
},
{
"category": "external",
"summary": "https://kernel.org/doc/html//next/admin-guide/hw-vuln/cross-thread-rsb.html",
"url": "https://kernel.org/doc/html//next/admin-guide/hw-vuln/cross-thread-rsb.html"
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{
"category": "external",
"summary": "https://www.amd.com/en/corporate/product-security/bulletin/amd-sb-1045",
"url": "https://www.amd.com/en/corporate/product-security/bulletin/amd-sb-1045"
},
{
"category": "external",
"summary": "https://www.openwall.com/lists/oss-security/2023/02/14/4",
"url": "https://www.openwall.com/lists/oss-security/2023/02/14/4"
},
{
"category": "external",
"summary": "https://xenbits.xen.org/xsa/advisory-426.html",
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{
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"cwe": {
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"name": "Exposure of Sensitive Information to an Unauthorized Actor"
},
"discovery_date": "2023-07-19T00:00:00+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "2223949"
}
],
"notes": [
{
"category": "description",
"text": "A Gather Data Sampling (GDS) transient execution side-channel vulnerability was found affecting certain Intel processors. This issue may allow a local attacker using gather instruction (load from memory) to infer stale data from previously used vector registers on the same physical core.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "hw: Intel: Gather Data Sampling (GDS) side channel vulnerability",
"title": "Vulnerability summary"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
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{
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{
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{
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{
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"text": "An out-of-bounds memory access flaw was found in the Linux kernel\u2019s TUN/TAP device driver functionality in how a user generates a malicious (too big) networking packet when napi frags is enabled. This flaw allows a local user to crash or potentially escalate their privileges on the system.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "kernel: tun: bugs for oversize packet when napi frags enabled in tun_napi_alloc_frags",
"title": "Vulnerability summary"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
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{
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"title": "kernel: net/sched: Use-after-free vulnerabilities in the net/sched classifiers: cls_fw, cls_u32 and cls_route"
},
{
"cve": "CVE-2023-4206",
"cwe": {
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"text": "2225511"
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{
"category": "description",
"text": "There are 3 CVEs for the use-after-free flaw found in net/sched/cls_fw.c in classifiers (cls_fw, cls_u32, and cls_route) in the Linux Kernel: CVE-2023-4206, CVE-2023-4207, CVE-2023-4208. \r\nA local user could use any of these flaws to crash the system or potentially escalate their privileges on the system.\r\n\r\nSimilar CVE-2023-4128 was rejected as a duplicate.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "kernel: net/sched: Use-after-free vulnerabilities in the net/sched classifiers: cls_fw, cls_u32 and cls_route",
"title": "Vulnerability summary"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
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{
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"url": "https://www.cve.org/CVERecord?id=CVE-2023-4206"
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{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2023-4206",
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{
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"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
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},
{
"category": "external",
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{
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"date": "2023-11-21T10:27:55+00:00",
"details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\n\nhttps://access.redhat.com/articles/11258\n\nThe system must be rebooted for this update to take effect.",
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{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2023-42753"
},
{
"category": "external",
"summary": "RHBZ#2239843",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2239843"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2023-42753",
"url": "https://www.cve.org/CVERecord?id=CVE-2023-42753"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2023-42753",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-42753"
},
{
"category": "external",
"summary": "https://seclists.org/oss-sec/2023/q3/216",
"url": "https://seclists.org/oss-sec/2023/q3/216"
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- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.